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Prediction market trading volume has skyrocketed from $1.2 billion in 2025 to $20 billion per month, attracting the interest of Wall Street firms and law enforcement. While much of the volume is still based on sports bets, an increasing segment involves wagers on financial events like interest rate decisions and corporate takeovers. Federal prosecutors in Manhattan are now scrutinizing some lucrative bets on prediction markets, examining whether they may have violated insider trading laws.
Why it matters
The rapid growth of prediction markets has created a new frontier for financial trading that operates similarly to futures contracts, with major banks and market makers now involved. However, this expansion has also raised concerns about potential fraud and insider trading, prompting law enforcement to take a closer look at the industry’s practices.
The details
Prediction markets allow traders to bet on the outcomes of future events, from sports games to financial decisions. The markets operate in a similar fashion to futures contracts, with major market makers matching trades. Wall Street firms have started embracing prediction markets as an indicator of ‘smart money’ sentiment on major events like interest rate decisions and corporate takeovers. Federal prosecutors in Manhattan, led by former SEC Chairman Jay Clayton, have met with representatives from prediction market platforms like Polymarket about suspicious bets on surprise events, examining whether they may have violated insider trading laws.
- Prediction market trading volume has surged from $1.2 billion in 2025 to $20 billion per month in 2026.
- Federal prosecutors in Manhattan recently met with Polymarket representatives about lucrative wagers on events like the capture of Nicolas Maduro and missile strikes on Iran.
The players
Jay Clayton
Former Securities and Exchange Commission Chairman, currently leading the US Attorney’s Office for the Southern District of New York.
Polymarket
A major prediction market platform that has been scrutinized by federal prosecutors.
Kalshi
A prediction market platform that has pledged to collaborate with law enforcement to ensure market integrity.
Scott Matagrano
A veteran hedge fund trader who has witnessed the growth of prediction markets.
What they’re saying
“The action in the prediction markets, like the action in any markets, is stuff that will be looked at.”
— Source, with knowledge of the matter
“Polymarket sets, maintains and enforces the highest standards of market integrity. We also proactively work with regulators and law enforcement to enforce those standards.”
— Polymarket
“Kalshi has been and will continue to collaborate with law enforcement on investigations to ensure the integrity of regulated prediction markets.”
— Robert DeNault, Head of Enforcement, Kalshi
What’s next
Federal prosecutors in Manhattan are expected to continue their scrutiny of prediction market trading, particularly looking for any signs of insider trading or market manipulation.
The takeaway
The rapid growth of prediction markets has created a new frontier for financial trading, attracting both Wall Street firms and law enforcement attention. While these markets offer new ways to gauge sentiment on major events, their lack of oversight has raised concerns about potential fraud and insider trading, prompting a crackdown by regulators.
